BOLT-HOLLOW 4927373 - Caterpillar

Table 1
Diagnostic Code
Code and Description Default Conditions which Generate this Code System Response
102 -00 Boost Pressure Sensor : High The boost pressure signal voltage is valid, but above normal. The diagnostic code is logged. Also, the engine power is limited. boost pressure is set to 600 kPa (87 psi).
102-01 Boost Pressure Sensor : Low The boost pressure signal voltage is valid, but below normal. The diagnostic code is logged. Also, the engine power is limited. boost pressure is set to 600 kPa (87 psi).
102-03 Boost Pressure Sensor : Voltage Above Normal The boost pressure signal voltage is greater than 5.0 VDC. The diagnostic code is logged. Also, the engine power is limited. boost pressure is set to 600 kPa (87 psi).
102-04 Boost Pressure Sensor : Voltage Below Normal The boost pressure signal voltage is less than 0.75 VDC. The diagnostic code is logged. Also, the engine power is limited. boost pressure is set to 600 kPa (87 psi).
Illustration 1 g03844552Recommended Actions
Table 2
Troubleshooting Test Steps Value Results
1. Inspect Electrical Connectors and Wiring.
A. Turn the engine control switch to the OFF position.
B. Thoroughly inspect the J2/P2 connector, and the J8/P8 connector. Refer to Troubleshooting, "Electrical Connectors - Inspect".
C. Perform a 45 N (10 lb) pull test on each of the wires that are associated with the inlet manifold pressure sensor.
D. Check the allen head screw on each ECM connector for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect".
E. Check the harness for abrasions and for pinch points from the battery to the ECM.
Electrical connectors and wiring
Result : The electrical connectors and wiring are OK.
Proceed to Test Step 2.
Result : The electrical connectors and wiring are NOT OK.
Repair : Repair the connectors or the harness and/or replace the connectors or the harness. Ensure that all of the seals are correctly in place and ensure that the connectors are coupled.
If the problem is not resolved, proceed to Test Step 2.
2. Check for Active Open or Short Diagnostic Codes.
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Turn the engine control switch to the ON position.
C. Check for active diagnostic codes 102-03 or 102-04.
Diagnostic codes
Result : There are no diagnostic codes.
Proceed to Test Step 3.
Result : Diagnostic codes 102-03 or 102-04 is present.
Repair : Refer to Troubleshooting, "Sensor Signal (Analog, Active) - Test.".
If the problem is not resolved, proceed to Test Step 3.
3. Calibrate the Boost Sensor.
A. Connect Cat ET to the Service Tool Connector.
B. Turn the engine control switch to the ON position.
C. Select the boost sensor calibration screen.
D. The calibration will take several seconds.
Boost sensor
Result : The boost sensor is OK.
Proceed to Test Step 4.
Result : The boost sensor is NOT OK.
Proceed to Test Step 5.
4. Boost Pressure Sensor Test.
A. Remove the sensor from the engine.
B. Connect the FT-1906 Air Test Kit to the sensor.
C. Connect to the service tool connector.
D. Turn the engine control switch to the ON position.
E. Close the valve on the test kit and apply 100 kPa (14.5 psi) to the sensor.
F. Observe